SAN RAMON, CA – August 7, 2020 – RheoSense, Inc. is proud to introduce the new VROC® initium one plus, the leading automatic viscometer that measures viscosity with the highest accuracy (2% of reading) and repeatability (0.5% of reading). Equipped with automatic sample loading and sample cleaning, VROC® initium one plus measures absolute viscosity as a function of shear rate across a wide temperature range (4 - 70°C), allowing for unique viscosity fingerprinting of your samples at our highest throughput, measuring up to 4 samples per hour.
A frequently asked question is, "what shear rates should I be using for my measurements?"
Back to Basics: Viscosity Fundamentals
Key Words: Face lotion, hand lotion, cream, viscosity, shear thinning, cleaning, high shear, non-Newtonian fluid, protocol, thixotropy
Goal: Cosmetic lotions are often non-Newtonian fluids with yield stresses and thixotropic structure. These properties are vital for their function as self-care products, but also make their rheological properties difficult to characterize. In particular, data collection can be time consuming and instrument cleaning can be challenging. This application note will share an easy-to-implement protocol to precisely measure complex cosmetic formulations using VROC technology.
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I recently had a customer who asked how VROC® technology measures viscosity compared to a rheometer that measures shear stress and also control shear rate. From the controls, the rheometer will then calculate viscosity. Similar to the rheometer, VROC® powered viscometers will measure the pressure drop to measure shear stress and use flow rates to control the flow. Essentially the ideas are parallel in the fact that VROC® measures the pressure drop and rheometers will measure torque so you will not need to readjust your expectations when working with VROC® technology.
Working with various CROs and CDMOs, we've come to the question that many companies find themselves asking, "what is the cost of providing the wrong viscosity values to my customers and worse, having them submit the values for FDA approval?"
We are proud to announce our formal Rheology Forum which will take place from March 10 to March 12, 2020. The course will focus on the following: